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A San Ysidro High School student is in custody, accused of sending threatening text messages to classmate. As NBC 7’s Vanessa Herrera explains, officers were waiting for him when the student arrived at school. (Published Wednesday, April 16, 2014)

Hours after police were called to San Ysidro High School to investigate a threat, officials confirmed that a student will undergo a mental evaluation after allegedly threatening other students.

San Diego police officers were called to the high school on Airway Road just before 8 a.m.

At the time, officers would only reveal that they were investigating an incident and directed all questions to district officials.

According to a Sweetwater Union High School District spokesperson, a student-to-student threat was made during a texting conversation between three students.

School administrators acted immediately and the student accused of making the threats was taken into custody, the school district official told NBC 7.

He described the situation that was reported on campus as "minor" and said no note will be sent home to parents.

San Ysidro High School principal Hector Espinoza told NBC 7 that while no note was sent, the school did send a recorded message via telephone to parents regarding the incident.

The recorded message stated:

"We wanted to inform you on the situation that took place this morning. We received credible information/tip on a student who threatened to hurt another. The threats were made through Facebook.

Upon learning of the threat we immediately apprehended the student and contacted the authorities. The student was dealt with and it was determined that it was not a threat to our campus.

If you have any further questions, please contact the school (619) 710-2300."

On Wednesday, staff from across the district completed safety training and the district spokesperson said the skills were put to use today with this incident at San Ysidro High School.